Control device

Abstract

According to one embodiment, a control device includes: a first device having a first controller; a second device having a second controller; a shared memory; and a first circuitry. The shared memory is configured to be shared by the first device and the second device. The first circuitry is configured: to acquire, when the second controller accesses the shared memory, information regarding the access from the second device; and to output, to the first device, the acquired information regarding the access.

1 . A control device comprising:
 a first device comprising a first controller;   a second device comprising a second controller;   a shared memory configured to be shared by the first device and the second device; and   first circuitry configured: to acquire, when the second controller accesses the shared memory, information regarding the access from the second device; and to output, to the first device, the acquired information regarding the access.   
     
     
         2 . The control device according to  claim 1 , wherein
 the second device further comprises second circuitry configured to acquire the information regarding the access by monitoring a bus between the second controller and the shared memory and to output, to the first circuitry, the acquired information regarding the access.   
     
     
         3 . The control device according to  claim 1 , wherein
 the first device further comprises a register configured to store therein the information regarding the access acquired from the first circuitry, and   the first controller is configured to access the shared memory based on the information regarding the access stored in the register.   
     
     
         4 . A control device comprising:
 a first device comprising a first controller;   a second device comprising a second controller;   a shared memory configured to be shared by the first controller and the second controller; and   first circuitry configured: to acquire, when an error has occurred in the second controller, information regarding the error from the second device; and to output, to the first device, the acquired information regarding the error.   
     
     
         5 . The control device according to  claim 4 , wherein
 the second device further comprises second circuitry configured to acquire the information regarding the error by monitoring a bus between the second controller and the shared memory and to output, to the first circuitry, the acquired information regarding the error.   
     
     
         6 . The control device according to  claim 4 , wherein
 the first device further comprises a register configured to store therein the information regarding the error acquired from the first circuitry, and   the first controller is configured to carry out exceptional processing based on the information regarding the error stored in the register.